var siderbar = [];
siderbar[1] = {
	'title' : '侧边栏广告3',
	'pic' : '/ZGCMS/Public/Uploads/siderbar_0dfc52057eb1ddacf97a86acaec26296.png',
	'link' : 'http://www.163.com'
};
siderbar[2] = {
	'title' : '侧边栏广告2',
	'pic' : '/ZGCMS/Public/Uploads/siderbar_8fb806dfbcf56095e6f442595b85ebbb.png',
	'link' : 'http://www.tmall.com'
};
siderbar[3] = {
	'title' : '侧边栏广告',
	'pic' : '/ZGCMS/Public/Uploads/siderbar_21e00120a509a8536155beaf549ca70c.png',
	'link' : 'http://www.tmall.com'
};
var i = Math.floor(Math.random()*3+1);
document.write('<a href="'+siderbar[i].link+'" target="_blank" title="'+siderbar[i].title+'"><img src="'+siderbar[i].pic+'"></a>');